I'm trying to meaningfully display longitudinal changes in lab test results to a lay (not necessarily stats literate) audience.
I currently show scatterplots with bands to indicate normal vs abnormal ranges but worry that I might not be conveying the magnitude of improvement/deterioration. All data points in the scatterplot are results for the same test and the methodology can be assumed to be identical.
I also worry that for patients with lots of data points, scatterplots can become noisy. I would appreciate feedback on appropriate visualization schemes for a lay audience.